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Table 3 Independent risk factors of H pylori seropositivity in O-87 and O-97 groups of patients (N:401) (multivariate logistic regression analysis).

From: Helicobacter pylori (H pylori) infection in Greece: the changing prevalence during a ten-year period and its antigenic profile

Variables Age (years) Odds ratio 95% CI p
15 – 24 1   
25 – 34 2.02 (0.94, 4.37) 0.073
35 – 44 3.45 (1.59, 7.49) 0.002
45 – 54 5.07 (2.31, 11.11) < 0.001
55 – 64 5.60 (2.57, 12.19) < 0.001
> 65 3.49 (1.51, 8.10) 0.004
Period    
1997 1   
1987 1.73 (1.14, 2.65) 0.010